Change Line Width of Plot of Fit in Matlab

Question

I'd like to change the width of my fit plot along the lines of:

plot(fit, 'LineWidth', WidthSpec)

Unfortunately, when I try plotting the data and fit simultaneously like:

plot(fit, 'LineWidth', WidthSpec, XData, YData)

I get an error message saying

??? Error using ==> cfit.plot at 52
EXCLUDEDATA has greater length than XDATA.

Plotting both without specification of the width like

plot(fit, XData, YData) 

works just fine.

Answer 1

Try to store the returned handle and adjust the width using that:

h = plot(fit, ...);
set(h, 'LineWidth',2)